## Summary
Restores the application **custom settings tab** feature that was
removed in #22156. This reverts that removal so applications can again
expose a custom settings tab via a front component.
## Changes
- Restore the `SettingsApplicationCustomTab` component and its tab
entry/rendering in `SettingsApplicationDetails`.
- `ApplicationManifestMigrationService` syncs
`settingsCustomTabFrontComponent` from application manifests again
(`syncDefaultRoleAndSettingsCustomTab`), resolving the front component
from `settingsCustomTabFrontComponentUniversalIdentifier`.
- Remove the deprecation annotations added by #22156:
- `ApplicationDTO.settingsCustomTabFrontComponentId` (drop GraphQL
`@deprecated`)
-
`ApplicationManifest.settingsCustomTabFrontComponentUniversalIdentifier`
- the `settingsCustomTabFrontComponentId` column comment on
`ApplicationEntity`
- Regenerate the corresponding GraphQL schema/types to drop the
`@deprecated` reason.
The DB column was never dropped, so no schema migration is required.
---
_Generated by [Claude
Code](https://claude.ai/code/session_01A6aoLa5kZjba9C3uwo6nay)_
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Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
martmull
